I agree with your statement missing mass is a motal sin,unless one is very sick or in the northern states extreme weather conditions.I know the Church is packed on Christmas and Easter(lots of people I see only then)My ? is why does the Church say one has to goto Church and receive communion once a year(perferably on Easter)?.Is that so one remains a Catholic in good standing?I think in local Church’s there should be homily’s on this,cause I bet lots of Catholic’s don’t know it’s a mortal sin to miss mass.